<style>
  div {
    width: 250px;
    height: 250px;
    margin: 50px auto;
    background: conic-gradient(#000 12.5%, #fff 0 37.5%, #000 0 62.5%, #fff 0 87.5%, #000 0);
    background-size: 50px 50px;
    border: 5px solid #999;
    border-radius: 50%;

  }
</style>


<div></div>